US6191538B1 - High-pressure discharge lamp having a base at one end and a starting device integrated in the base - Google Patents

High-pressure discharge lamp having a base at one end and a starting device integrated in the base Download PDF

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Publication number
US6191538B1
US6191538B1 US09/515,400 US51540000A US6191538B1 US 6191538 B1 US6191538 B1 US 6191538B1 US 51540000 A US51540000 A US 51540000A US 6191538 B1 US6191538 B1 US 6191538B1
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US
United States
Prior art keywords
base
discharge lamp
pressure discharge
bidirectional
electric terminal
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US09/515,400
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English (en)
Inventor
Guenther Hirschmann
Arnulf Rupp
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Osram GmbH
Original Assignee
Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH
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Assigned to PATENT-TREUHAND-GESELLSCHAFT FUER ELEKTRISCHE GLUEHLAMPEN MBH reassignment PATENT-TREUHAND-GESELLSCHAFT FUER ELEKTRISCHE GLUEHLAMPEN MBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: HIRSCHMANN, GUENTHER, RUPP, ARNULF
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/56—One or more circuit elements structurally associated with the lamp
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
    • H05B41/02—Details
    • H05B41/04—Starting switches
    • H05B41/042—Starting switches using semiconductor devices

Definitions

  • the invention relates to a high-pressure discharge lamp having a base at one end in accordance with the preamble of patent claim 1 .
  • Such a high-pressure discharge lamp is disclosed, for example, in the international patent application having the publication number WO 98/53647.
  • This laid-open patent application describes a high-pressure discharge lamp having a base at one end and a pulse starting device arranged in the base. Accommodated additionally in the base is at least one radio interference suppression reactor which is connected via a supply lead to a gas discharge electrode of the high-pressure discharge lamp.
  • One of these supply leads is constructed as a return conductor led back to the base from the end of the discharge vessel remote from the base. This return conductor runs outside the lamp vessel and has in part no electric insulation.
  • the high voltage required to start the gas discharge in the discharge vessel is fed to the high-pressure discharge lamp, for safety reasons, via the supply lead near the base, which lead is completely surrounded by the lamp vessels or by the base.
  • the gas discharge electrode remote from the base is connected to the frame potential via the return conductor during operation of the lamp so that no high electric voltages occur on the return conductor, which is only partially electrically insulated, during the operation of the lamp.
  • the high-pressure discharge lamp having a base at one end has a base with at least two electric terminals for supplying voltage to the high-pressure discharge lamp, and a discharge vessel which is sealed at both ends and has a sealed end near the base and a sealed end remote from the base.
  • a discharge vessel which is sealed at both ends and has a sealed end near the base and a sealed end remote from the base.
  • an ionizable filling for producing a light-emitting gas discharge.
  • at least one radio interference suppression reactor and a starting device for starting a gas discharge in the discharge vessel are arranged in the base.
  • the high-pressure discharge lamp according to the invention has at least two gas discharge electrodes arranged inside the discharge vessel, at least one first gas discharge electrode being connected to one first electric terminal of the high-pressure discharge lamp via a return conductor led out from the end remote from the base and via the at least one radio interference suppression reactor, and at least one second gas discharge electrode being connected to a second electric terminal of the high-pressure discharge lamp by means of a supply lead led out from the end near the base.
  • the return conductor is connected to the second electric terminal of the high-pressure discharge lamp via a bidirectional trigger arranged in the base, and the first electric t erminal is connected to the second electric terminal of the high-pressure discharge lamp via the at least one radio interference suppression reactor and via the bidirectional trigger.
  • the bidirectional trigger advantageously makes thermal contact with a heat sink.
  • the voltage drop across the return conductor during the starting phase is limited to at most 1 kV by the abovementioned features according to the invention, thus avoiding electric flashovers from the return conductor onto electrically conducting components arranged in the environment, in particular onto the metallized reflector surface, and, furthermore, thus preventing damage owing to voltage overloading of the operating unit connected to the high-pressure discharge lamp.
  • the bidirectional diode circuit is advantageously designed in such a way that it has two oppositely series-connected Zener diodes as equivalent circuit. It is particularly well suited to limiting high-frequency voltages and/or for limiting voltage pulses both of negative and of positive polarity.
  • This diode circuit is, for example, a bidirectional diode arrangement marketed by the SGS Thomson company under the tradename of TransilTM diode.
  • the bidirectional trigger is advantageously dimensioned such that it has a breakdown voltage of at least 600 V and a clamping voltage of at least 800 V, without incurring damage.
  • FIG. 1 shows a schematic representation of the circuit arrangement arranged in the base of the high-pressure discharge lamp according to the invention, in accordance with the first exemplary embodiment
  • FIG. 2 shows a schematic representation of the circuit arrangement arranged in the base of the high-pressure discharge lamp according to the invention, in accordance with the second exemplary embodiment
  • FIG. 3 shows a cross section through the high-pressure discharge lamp according to the invention, in a schematic representation.
  • the high-pressure discharge lamp LP has a base 10 and a discharge vessel 11 , which is sealed at both ends and has an end 11 a near the base and an end 11 b remote from the base.
  • the discharge vessel 11 is surrounded by a vitreous outer bulb 12 fastened on the discharge vessel.
  • the subassembly comprising the discharge vessel 11 and the outer bulb 12 is anchored in a holding device of the base 10 .
  • An ionizable filling and two gas discharge electrodes E 1 , E 2 are enclosed in the discharge vessel 11 in order to produce a light-emitting gas discharge.
  • the gas discharge electrode E 1 remote from the base is connected to a first radio interference suppression reactor L 1 or L 3 arranged in the base 10 via a return conductor 13 which is led out from the discharge vessel end 11 b remote from the base and led back to the base 10 .
  • the section of the return conductor 13 running along the outer bulb 12 is surrounded by a ceramic insulation 14 .
  • the gas discharge electrode E 2 near the base is connected to the secondary winding N 2 or N 4 of a starting transformer TR or TR′ of a pulse starting device Z or Z′, likewise arranged in the base 10 , via a supply lead 15 which is led out from the discharge vessel end 11 a near the base and runs completely inside the base 10 or inside the lamp vessels 11 , 12 .
  • FIG. 1 shows the starting circuit arrangement according to the first exemplary embodiment, which is arranged in the base 10 of the high-pressure discharge lamp LP and comprises the pulse starting device Z and the radio interference suppression reactors L 1 , L 2 as well as the bidirectional trigger D.
  • the pulse starting device Z comprises a starting transformer TR with a primary winding N 1 and a secondary winding N 2 , as well as the starting capacitor C 1 and the spark gap FS.
  • the gas discharge electrode E 1 remote from the base is connected to a first electric terminal j 1 of the base 10 via the return conductor 13 and via the first radio interference suppression reactor L 1 .
  • the gas discharge electrode E 1 remote from the base is connected to a second electric terminal j 2 of the base 10 via the return conductor 13 and via the bidirectional trigger D.
  • the first electric terminal j 1 is connected to the second electric terminal j 2 via the first radio interference suppression reactor L 1 and via the bidirectional trigger D.
  • the gas discharge electrode E 2 near the base is connected to the second electric terminal j 2 of the base 10 via the supply lead 15 , via the second radio interference suppression reactor L 2 and via the secondary winding N 2 of the transformer TR.
  • a third electric terminal j 3 of the base 10 is connected to the second electric terminal j 2 of the base 10 via the starting capacitor C 1 .
  • the series circuit comprising the primary winding N 1 of the starting transformer TR and the spark gap FS is arranged in parallel with the starting capacitor C 1 .
  • the second electric terminal j 2 and the third electric terminal j 3 serve as voltage input for the pulse starting device Z.
  • the three electric terminals j 1 , j 2 , j 3 (not illustrated in FIG. 3) of the base 10 are connected to corresponding terminals of an operating unit which is arranged in the motor vehicle and generates the supply voltage for the starting device Z at the terminals j 2 , j 3 , and the operating voltage for the high-pressure discharge lamp LP at the terminals j 1 , j 2 .
  • the terminal j 1 is also connected to the internal circuit frame potential of the operating unit.
  • the starting capacitor C 1 In order to start the gas discharge in the discharge vessel 11 of the high-pressure discharge lamp LP, the starting capacitor C 1 is charged via its connection to the voltage input j 1 , j 3 . Once the voltage drop across the starting capacitor C 1 reaches the breakdown voltage of the spark gap FS, the starting capacitor C 1 is discharged suddenly via the primary winding N 1 of the transformer TR. In the secondary winding N 2 of the transformer TR, this causes induction of high-voltage pulses of up to 25 kV which are applied to the gas discharge electrode E 2 near the base.
  • a lamp current flows through the high-pressure discharge lamp, that is to say via the discharge path E 1 -E 2 , and through the two radio interference suppression reactors L 1 , L 2 as well as via the terminals j 1 , j 2 .
  • the two radio interference suppression reactors L 1 , L 2 serve to suppress the radio interference of this discharge current through the lamp.
  • voltage pulses of up to 6 kV are also induced in the two radio interference suppression reactors L 1 , L 2 .
  • the bidirectional trigger D is connected in series with the radio interference suppression reactor L 1 , with the result that the sum of the operating voltage provided at the terminals j 1 , j 2 and the induction voltage of the radio interference suppression reactor L 1 is present at the trigger D. If the sum of these voltages exceeds the breakdown voltage of the trigger D, the trigger D becomes electrically conductive. The electric energy stored in the radio interference suppression reactor L 1 is then produced via the bidirectional trigger D.
  • the breakdown voltage of the bidirectional trigger D is at least 550 V. Moreover, it is dimensioned such that the clamping voltage is between 550 V and at most 740 V. In the case of voltages above the breakdown voltage, an electric current which leads to heating of the trigger D flows through the trigger D. The trigger D therefore makes thermal contact with a heat sink.
  • a diode arrangement marketed by the SGS Thomson company under the name of bidirectional TransilTM diode is used as bidirectional trigger D.
  • This bidirectional diode circuit D has two oppositely series-connected Zener diodes as equivalent circuit.
  • the amplitude of the high-frequency high-voltage pulses generated by the radio interference suppression reactor L 1 during the starting phase, which are applied to the return conductor 13 , is limited by the bidirectional diode circuit D to a maximum value of 1 kV. Electric flashovers from the return conductor 13 onto the headlight reflector, in which the high-pressure discharge lamp is arranged, are therefore not to be feared.
  • the starting circuit arrangement according to the second exemplary embodiment which is arranged in the base 10 of the high-pressure discharge lamp LP and comprises the pulse starting device Z′ and the radio interference suppression reactor L 3 as well as the bidirectional trigger D′, is represented in FIG. 2 .
  • the pulse starting device Z′ comprises a starting transformer TR′ with a primary winding N 3 and a secondary winding N 4 , as well as the starting capacitor C 2 , a capacitor C 4 connected in parallel with the discharge path E 1 -E 2 of the lamp, and the spark gap FS′.
  • the gas discharge electrode E 1 remote from the base is connected to a first electric terminal j 4 of the base 10 via the return conductor 13 and via the radio interference suppression reactor L 3 .
  • the gas discharge electrode E 1 remote from the base is connected to a second electric terminal j 5 of the base 10 via the return conductor 13 and via the bidirectional trigger D′.
  • the first electric terminal j 4 is connected to the second electric terminal j 5 via the radio interference suppression reactor L 3 and via the bidirectional trigger D′.
  • Connected in parallel with the terminals j 4 and j 5 is a capacitor C 3 which limits the voltage rise dU/dt between these two terminals j 4 , j 5 .
  • the gas discharge electrode E 2 near the base is connected to the second electric terminal j 5 of the base 10 via the supply lead 15 and via the secondary winding N 4 of the transformer TR′.
  • a third electric terminal j 6 of the base 10 is connected to the second electric terminal j 5 of the base 10 via the starting capacitor C 2 .
  • the series circuit comprising the primary winding N 4 of the starting transformer TR′ and the spark gap FS′ is arranged in parallel with the starting capacitor C 2 .
  • the second electric terminal j 5 and the third electric terminal j 6 serve as voltage input for the pulse starting device Z′.
  • the terminal j 4 is also connected to the internal circuit frame potential of the operating unit.
  • This circuit arrangement differs from the circuit arrangement in accordance with the first exemplary embodiment by the additional capacitors C 3 , C 4 and by virtue of the fact that it has only one instead of two radio interference suppression reactors.
  • One radio interference suppression reactor L 3 also suffices to suppress the radio interference of the lamp current.
  • the starting voltage for the high-pressure discharge lamp is provided at the capacitor C 4 .
  • the bidirectional trigger D′ is connected in series with the radio interference suppression reactor L 3 , with the result that the sum of the operating voltage provided at the terminals j 4 , j 5 and the induction voltage of the radio interference suppression reactor L 3 is present at the trigger D′. If the sum of these voltages exceeds the breakdown voltage of the trigger D′, the trigger D′ becomes electrically conductive. The electric energy stored in the radio interference suppression reactor L 3 is then reduced via the bidirectional trigger D′.
  • the breakdown voltage of the bidirectional trigger D′ is at least 550 V. Moreover, it is dimensioned such that the clamping voltage is between 550 V and at most 740 V.
  • bidirectional trigger D′ In the case of voltages above the breakdown voltage, an electric current which leads to heating of the trigger D′ flows through the trigger D′.
  • a diode arrangement marketed by the SGS Thomson company under the name of bidirectional TransilTM diode is used as bidirectional trigger D′.
  • This bidirectional diode circuit D′ has two oppositely series-connected Zener diodes as equivalent circuit.
  • the high-frequency high-voltage pulses which occur during the starting phase on the return conductor 13 and which are conditioned by the induction voltage pulses occurring at the radio interference suppression reactor L 3 are therefore limited to a value of at most ⁇ 1 kV.
  • the capacitor C 3 limits the voltage rise dU/dt of these high-voltage pulses.
  • the invention is not limited to the exemplary embodiments explained in more detail above.
  • a varistor, a Sidac or a thyristor as bidirectional triggers D, D′.
  • a bidirectional diode circuit comprising at least two oppositely polarized, series-connected Zener diodes as bidirectional triggers D, D′.

Landscapes

  • Circuit Arrangements For Discharge Lamps (AREA)
  • Discharge Lamps And Accessories Thereof (AREA)
  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
US09/515,400 1999-03-04 2000-02-29 High-pressure discharge lamp having a base at one end and a starting device integrated in the base Expired - Lifetime US6191538B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19909529 1999-03-04
DE19909529A DE19909529A1 (de) 1999-03-04 1999-03-04 Einseitig gesockelte Hochdruckentladungslampe mit im Sockel integrierter Zündvorrichtung

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US6191538B1 true US6191538B1 (en) 2001-02-20

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US09/515,400 Expired - Lifetime US6191538B1 (en) 1999-03-04 2000-02-29 High-pressure discharge lamp having a base at one end and a starting device integrated in the base

Country Status (9)

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US (1) US6191538B1 (es)
EP (1) EP1033906B1 (es)
JP (1) JP2000286081A (es)
KR (1) KR100615744B1 (es)
AT (1) ATE264603T1 (es)
CA (1) CA2299864C (es)
DE (2) DE19909529A1 (es)
ES (1) ES2219214T3 (es)
HU (1) HUP0000994A3 (es)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6536918B1 (en) * 2000-08-23 2003-03-25 General Electric Company Lighting system for generating pre-determined beam-pattern
WO2003077613A1 (en) * 2002-03-13 2003-09-18 Koninklijke Philips Electronics N.V. Electric circuit for igniting a discharge lamp, and electric component module and discharge lamp incorporating such an electric circuit
US20050169341A1 (en) * 2002-11-20 2005-08-04 Bergmann Hubertus V. Reduced-maintenance excimer laser with oil-free solid state pulser
US20140167635A1 (en) * 2010-09-22 2014-06-19 Joachim Mühlschlegel Method for Starting a High-Pressure Discharge Lamp
US9288908B2 (en) * 2012-11-02 2016-03-15 Rohm Co., Ltd. Chip capacitor, circuit assembly, and electronic device

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1422978A4 (en) * 2001-08-31 2006-10-04 Harison Toshiba Lighting Corp HIGH VOLTAGE DISCHARGE LAMP LIGHTING APPARATUS, HIGH VOLTAGE DISCHARGE LAMP APPARATUS, AND PROJECTION LAMP APPARATUS
DE202005003632U1 (de) * 2005-03-03 2006-07-13 Bag Electronics Gmbh Zündschaltungsanordnung mit erhöhter Ausfallsicherheit
DE102005060797A1 (de) * 2005-12-16 2007-06-28 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Vorrichtung zur Verbesserung der elektromagnetischen Verträglichkeit einer Hochdruckentladungslampe
DE102008046163A1 (de) * 2008-09-06 2010-03-11 Hella Kgaa Hueck & Co. Zündgerät mit Filter für eine Hochdruckgasentladungslampe

Citations (2)

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Publication number Priority date Publication date Assignee Title
US4890041A (en) * 1988-03-10 1989-12-26 Hubbell Incorporated High wattage HID lamp circuit
WO1998053647A1 (de) 1997-05-21 1998-11-26 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Zündvorrichtung für eine entladungslampe und verfahren zum zünden einer entladungslampe

Family Cites Families (4)

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US4677348A (en) * 1985-04-29 1987-06-30 Starter Systems, Inc. Combined ignitor and transient suppressor for gaseous discharge lighting equipment
EP0337022A1 (en) * 1988-04-12 1989-10-18 Actronic Lighting Cc Starting assistance device for a gas discharge lamp
DE4236403A1 (de) * 1992-10-28 1994-07-07 Tridonic Bauelemente Ges Mbh D Zündschaltung für eine Hochdruckmetalldampfentladungslampe
DE19610388A1 (de) * 1996-03-16 1997-09-18 Bosch Gmbh Robert Zündeinrichtung für eine Entladungslampe

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4890041A (en) * 1988-03-10 1989-12-26 Hubbell Incorporated High wattage HID lamp circuit
WO1998053647A1 (de) 1997-05-21 1998-11-26 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Zündvorrichtung für eine entladungslampe und verfahren zum zünden einer entladungslampe

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6536918B1 (en) * 2000-08-23 2003-03-25 General Electric Company Lighting system for generating pre-determined beam-pattern
WO2003077613A1 (en) * 2002-03-13 2003-09-18 Koninklijke Philips Electronics N.V. Electric circuit for igniting a discharge lamp, and electric component module and discharge lamp incorporating such an electric circuit
US20050104538A1 (en) * 2002-03-13 2005-05-19 Jerzy Janczak Electric circuit for igniting a discharge lamp, and electric component module and discharge lamp incorporating such an electric circuit
US7256548B2 (en) * 2002-03-13 2007-08-14 Koninklijke Philips Electronics, N.V. Electric circuit for igniting a discharge lamp, and electric component module and discharge lamp incorporating such an electric circuit
US20050169341A1 (en) * 2002-11-20 2005-08-04 Bergmann Hubertus V. Reduced-maintenance excimer laser with oil-free solid state pulser
US6999492B2 (en) * 2002-11-20 2006-02-14 Lambda Physik Ag Reduced-maintenance excimer laser with oil-free solid state pulser
US20140167635A1 (en) * 2010-09-22 2014-06-19 Joachim Mühlschlegel Method for Starting a High-Pressure Discharge Lamp
US9288908B2 (en) * 2012-11-02 2016-03-15 Rohm Co., Ltd. Chip capacitor, circuit assembly, and electronic device
US9685273B2 (en) 2012-11-02 2017-06-20 Rohm Co., Ltd. Chip capacitor, circuit assembly, and electronic device
US10026557B2 (en) 2012-11-02 2018-07-17 Rohm Co., Ltd. Chip capacitor, circuit assembly, and electronic device
US10593480B2 (en) 2012-11-02 2020-03-17 Rohm Co., Ltd. Chip capacitor, circuit assembly, and electronic device

Also Published As

Publication number Publication date
HU0000994D0 (en) 2000-05-28
ES2219214T3 (es) 2004-12-01
EP1033906B1 (de) 2004-04-14
DE19909529A1 (de) 2000-09-07
KR20000062732A (ko) 2000-10-25
EP1033906A2 (de) 2000-09-06
HUP0000994A2 (hu) 2000-09-28
EP1033906A3 (de) 2001-09-19
ATE264603T1 (de) 2004-04-15
CA2299864C (en) 2008-12-09
DE50006033D1 (de) 2004-05-19
CA2299864A1 (en) 2000-09-04
HUP0000994A3 (en) 2002-11-28
JP2000286081A (ja) 2000-10-13
KR100615744B1 (ko) 2006-08-25

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